Plain Linear Bearings, Sleeve Bushings, Pillow Blocks and Flange Mounts
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Closed plain linear bearing with a 1/2" precision ID, which has a 0.0005" per side running clearance. Encased in an anodized aluminum shell and lined with self-lubricating FrelonGOLD®, this bearing ensures maintenance-free performance in harsh conditions, including extreme temperatures, dirt, and vibration, where ball bearings often fail.
$18.46
Closed plain linear bearing with a 1" precision ID, which has a 0.0005" per side running clearance. Encased in an anodized aluminum shell and lined with self-lubricating FrelonGOLD®, this bearing ensures maintenance-free performance in harsh conditions, including extreme temperatures, dirt, and vibration; where ball bearings often fail. Inch Series Closed..
$38.84
Closed plain linear bearing with a 3/8" precision ID, which has a 0.0005" per side running clearance. Encased in an anodized aluminum shell and lined with self-lubricating FrelonGOLD®, this bearing ensures maintenance-free performance in harsh conditions, including extreme temperatures, dirt, and vibration; where ball bearings often fail. Inch Series Closed..
$17.71
Closed plain linear bearing with a 8mm ISO Metric precision ID (inner diameter) with a running clearance of 0.0005" per side. Self-Lubricating Bearing Liner is FrelonGOLD®. ISO Metric - Closed anodized aluminum shell Precision running clearance of 0.0005" per side Self-Lubricating Bearing Liner: FrelonGOLD® is standard. Operates well in harsh..
$15.98
Closed plain linear bearing with a 3/4" precision ID, which has a 0.0005" per side running clearance. Encased in an anodized aluminum shell and lined with self-lubricating FrelonGOLD®, this bearing ensures maintenance-free performance in harsh conditions, including extreme temperatures, dirt, and vibration; where ball bearings often fail. Inch Series Closed..
$21.00
Closed plain linear bearing with a 1.5" precision ID, which has a 0.0005" per side running clearance. Encased in an anodized aluminum shell and lined with self-lubricating FrelonGOLD®, this bearing ensures maintenance-free performance in harsh conditions, including extreme temperatures, dirt, and vibration; where ball bearings often fail. Inch Series Closed..
$74.87
Plain linear bearing, closed, with a 1.5" compensated ID, which has a 0.0015" per side running clearance. Housed in an anodized aluminum shell and lined with self-lubricating FrelonGOLD®, this bearing ensures maintenance-free performance in harsh conditions, including extreme temperatures, dirt, and vibration. Inch Series - Closed Anodized aluminum shell Compensated..
$74.87
Open Plain Linear Bearing Pillow Block with a 1/2" inner diameter and a compensated running clearance of 0.0015" per side. A mountable standard-sized aluminum housing encloses the bearing, which features a self-lubricating FrelonGOLD® liner for maintenance-free operation in harsh conditions like extreme temperatures, dirt and vibration. Optional liners: corrosive chemical..
$63.28
Plain linear bearing, closed, with a 1/4" compensated ID, which has a 0.0015" per side running clearance. Housed in an anodized aluminum shell and lined with self-lubricating FrelonGOLD®, this bearing ensures maintenance-free performance in harsh conditions, including extreme temperatures, dirt, and vibration. Inch Series - Closed Anodized aluminum shell Compensated..
$15.98
Closed plain linear bearing with a 1/4" precision ID, which has a 0.0005" per side running clearance. Encased in an anodized aluminum shell and lined with self-lubricating FrelonGOLD®, this bearing ensures maintenance-free performance in harsh conditions, including extreme temperatures, dirt, and vibration; where ball bearings often fail. Inch Series Closed..
$15.98
Plain Linear Bearing Pillow Block, closed shell, with a 1" inner diameter and a compensated running clearance of 0.0015" per side. A mountable standard-sized aluminum housing encloses the bearing, which features the renowned FrelonGOLD® self-lubricating liner for maintenance-free performance under harsh conditions like extreme temperatures, dirt and vibration. Liner options:..
$91.53
Square Flanged Plain Linear Bearing with a 3/4" compensated ID, designed to slide smoothly on both steel and ceramic-coated aluminum shafts. It features a self-lubricating FrelonGOLD® bearing liner that performs reliably with vibration damping in harsh conditions, enabling long-term, maintenance-free operation. Compensated running clearance on the inner diameter 0.0015” per..
$81.15
Linear Sleeve Bearing with an 8mm ID, a 12mm OD and a 12mm length, unflanged with a closed aluminum alloy shell. This maintenance-free Simplicity® plain bushing is designed for both linear and rotational movement. The self-lubricating FrelonGold® bearing liner guarantees performance in extreme environments, including heat, dirt, and oscillation, eliminating..
$11.82
Linear Sleeve Bearing with a 1/4" inner diameter, 1/2" length and closed aluminum alloy shell. This maintenance-free Simplicity® plain bushing is designed for both linear and rotational movement. The self-lubricating FrelonGold® bearing liner guarantees performance in extreme environments, including heat, dirt, and oscillation, eliminating the risk of catastrophic failure. Temperature..
$14.13
Open Plain Linear Bearing Pillow Block with a 3/4" ID and compensated running clearance of 0.0015" per side. A mountable standard-sized aluminum housing encloses the bearing, which features a self-lubricating FrelonGOLD® liner for maintenance-free operation in harsh conditions like extreme temperatures, dirt and vibration. Optional liners: corrosive chemical resistant Frelon®J..
$78.52
Closed crowned plain linear bearing with 3/4 inch ID (inner diameter) and a precision running clearance of 0.0005" per side. Self-Lubricating Bearing Liner is FrelonGOLD®. Crowned self-aligning outer diameter Inch Series Precision running clearance 0.0005" per side Self-Lubricating Bearing Liner: FrelonGOLD® is standard. Operates well in harsh, high temperature environments..
$23.09
Square Linear Bearing with a 1" diameter, 2.25" length, featuring 2 adjustable Frelon®J self-lubricating plugs on each of two adjacent sides (at right angles to each other) and Frelon pads on the opposing sides for smooth, corrosion-resistant sliding on a stainless steel square shaft. Crafted from anodized aluminum, this low-maintenance..
$108.40
Simplicity® Plain Linear Sleeve Bearing with a 1" inner diameter and 1.5" length, and a round flanged end mount. This closed plain bushing is designed for both linear and rotational movement. The self-lubricating, maintenance-free bearing liner is FrelonGold®, ensuring durable performance in hot or dirty environments without catastrophic failure. Temperature..
$38.76
Linear Sleeve Bearing with a 3/4" inner diameter, 1" length and closed aluminum alloy shell. This maintenance-free Simplicity® plain bushing is designed for both linear and rotational movement. The self-lubricating FrelonGold® bearing liner guarantees performance in extreme environments, including heat, dirt, and oscillation, eliminating the risk of catastrophic failure. Temperature..
$18.32
Open Plain Linear Bearing Pillow Block with a 1" inner diameter and a compensated running clearance of 0.0015" per side. A mountable standard-sized aluminum housing encloses the bearing, which features a self-lubricating FrelonGOLD® liner for maintenance-free operation in harsh conditions like extreme temperatures, dirt and vibration. Optional liners: corrosive chemical..
$110.92
Plain linear bearings are precision-bored linear motion components that use a bonded, self-lubricating liner in the bore to provide low-friction, maintenance-free guidance along round or square shafts or profiled rails. Simplicity® Plain Linear Bearing variants feature a FrelonGOLD® PTFE-based liner that minimizes friction and wear, eliminates external lubrication, and delivers long-lasting performance in harsh, hot, or dirty environments. Available configurations include standalone bearings, sleeve bearings, flanged bearings, and pillow block mounted bearings. Standalone variants are offered with straight or crowned anodized aluminum shells in open or closed styles. Sleeve bearings are available in straight or flanged designs, while pillow block assemblies and aluminum flanged mounts are offered in standard or double-size housings, open or closed. Optional Frelon® J liners provide resistance to corrosive chemicals, and Frelon® W liners ensure FDA-compliant performance. All variants are available with precision or compensated running clearances and support rotary, linear, or oscillating motion. ID sizes are in inch, ISO Metric, and JIS. The 2:1 binding rule applies.
- Sizing Options: Inch, metric, and JIS sizes available
- Available in open, closed and thin-wall styles
- ID Sizes: Available from 3/16” to 4” Inch Series, 5mm to 80mm Metric Series
- Shaft Lengths: Up to 12 feet
- Shell Material: Standard is aluminum; stainless steel shells are available
- Maximum Speed: Up to 8 m/s (315 in/s)
- Temperature Rating: -400°F to +400°F or -240°C to 204°C
- Maximum Horizontal Static Load: 2,165 to 100,500 lb (982 to 45,586 kg)
- Seal Options: Nitrile rubber, urethane, and viton seals available from ½” ID and up or 20mm and up
- Mounting Options: O-ring and retaining ring grooves for multiple mounting options
- External Lubrication: Optional feature for added lubrication
- Vibration Damping: Ensures smooth and quiet operation
View the Plain Linear Bearing Product Features page
Frequently Asked Questions
What are flanged plain bearings used for?
Flanged plain bearings are used to simplify mounting and axial positioning in linear motion systems, providing a built-in flange that helps secure the bearing within a housing or plate.
What is a pillow block plain bearing?
A pillow block plain bearing is a mounted assembly that houses a plain bearing in a rigid block, making installation easier while providing alignment support and load distribution.
What are twin or double-size plain bearings?
Twin or double-size plain bearings feature extended length or dual-bearing surfaces to increase load capacity, improve stability, and reduce deflection in demanding applications.
What are die set plain bearings used for?
Die set plain bearings are designed for use in stamping and tooling applications, providing precise linear guidance and durability under high loads and repetitive motion.
What are thin-wall plain bearings?
Thin-wall plain bearings are designed for space-constrained applications, offering a reduced outer diameter while maintaining low friction and reliable linear motion performance.
What is a sleeve bushing in linear motion applications?
A sleeve bushing is a cylindrical plain bearing that provides smooth, low-friction motion along a shaft, commonly used where compact size and simple installation are required.
What are the benefits of self-lubricating liners in plain bearings?
Self-lubricating liners eliminate the need for external lubrication, reduce maintenance, minimize friction and wear, and perform reliably in dirty, dry, or high-temperature environments.
When should mounted plain bearings be used instead of standalone bearings?
Mounted plain bearings, such as pillow blocks or flanged units, should be used when easier installation, improved alignment, and additional structural support are required.
What materials are used in plain bearing liners?
Plain bearing liners are typically made from PTFE-based materials that provide low friction, wear resistance, and consistent performance across a wide range of temperatures and conditions.
Can plain bearings operate without lubrication?
Yes, plain bearings with self-lubricating liners are designed to operate without external lubrication, making them ideal for applications where maintenance access is limited or contamination is a concern.
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